I keep saying, and continuing to believe and practice, that not having the "right" fabric increases your opportunity for creativity. It forces you to think beyond the limit at hand. It requires using similar colors but in other prints/lines/manufacturers. And *that* adds to the texture, movement, eye appeal of quilts!
I hope never to use my time to makes rules and demand (to me) unnecessary organization when I could be spending that time of dreaming about, designing, looking at, and sewing quilts!
Other than preferring 100% cotton and storing my fabrics by color stack, I am not obsessive about it.
Jan in VA